Digital video frequency watermark method based on error correcting code
A technology of digital video and error correction code, applied in the direction of digital video signal modification, television, color television, etc., can solve the problems of neglecting watermark information and embedding watermark information, and achieve the effect of enhanced robustness and strong applicability
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[0017] The process of embedding a watermark is as follows: figure 1 As shown, the specific steps are:
[0018] 1. Generate error correction information R from watermark information W according to error correction code algorithm G.
[0019] 2. Video data D is separated into luminance information (Y) and chrominance information (commonly used are UV, CrCb, IQ, etc.)
[0020] 3. Using Algorithm E 1 ,E 2 ,E 3 Embed watermark information W and error correction information R into brightness information and chrominance information respectively. E. 1 ,E 2 ,E 3 Can be the same or different.
[0021] 4. Synthesize the luminance information embedded with watermark information and the chrominance information embedded with error correction information into video data D'.
[0022] The process of extracting watermark is as follows: figure 2 As shown, the specific steps are:
[0023] 1. The embedded watermark video data D is separated into luminance information (Y) and chrominance...
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